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Simple electron-electron scattering in non-equilibrium Green's function simulations

Winge, David O. LU ; Franckié, Martin LU ; Verdozzi, Claudio LU ; Wacker, Andreas LU and Pereira, Mauro F. (2016) In Journal of Physics: Conference Series 696(1).
Abstract

In this work we include electron-electron interaction beyond Hartree-Fock level in our non-equilibrium Green's function approach by a crude form of GW through the Single Plasmon Pole Approximation. This is achieved by treating all conduction band electrons as a single effective band screening the Coulomb potential. We describe the corresponding self-energies in this scheme for a multi-subband system. In order to apply the formalism to heterostructures we discuss the screening and plasmon dispersion in both 2D and 3D systems. Results are shown for a four well quantum cascade laser with different doping concentration where comparisons to experimental findings can be made.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics: Conference Series
volume
696
issue
1
publisher
IOP Publishing
external identifiers
  • Scopus:84964891360
ISSN
1742-6588
DOI
10.1088/1742-6596/696/1/012013
language
English
LU publication?
yes
id
435e130b-2f2b-4a71-baef-af91e2e25f97
date added to LUP
2016-10-03 10:09:48
date last changed
2016-10-03 10:09:48
@misc{435e130b-2f2b-4a71-baef-af91e2e25f97,
  abstract     = {<p>In this work we include electron-electron interaction beyond Hartree-Fock level in our non-equilibrium Green's function approach by a crude form of GW through the Single Plasmon Pole Approximation. This is achieved by treating all conduction band electrons as a single effective band screening the Coulomb potential. We describe the corresponding self-energies in this scheme for a multi-subband system. In order to apply the formalism to heterostructures we discuss the screening and plasmon dispersion in both 2D and 3D systems. Results are shown for a four well quantum cascade laser with different doping concentration where comparisons to experimental findings can be made.</p>},
  author       = {Winge, David O. and Franckié, Martin and Verdozzi, Claudio and Wacker, Andreas and Pereira, Mauro F.},
  issn         = {1742-6588},
  language     = {eng},
  month        = {04},
  number       = {1},
  publisher    = {ARRAY(0xad53e00)},
  series       = {Journal of Physics: Conference Series},
  title        = {Simple electron-electron scattering in non-equilibrium Green's function simulations},
  url          = {http://dx.doi.org/10.1088/1742-6596/696/1/012013},
  volume       = {696},
  year         = {2016},
}